121434112240 has 80 divisors (see below), whose sum is σ = 322712345088. Its totient is φ = 41628803328.

The previous prime is 121434112229. The next prime is 121434112259. The reversal of 121434112240 is 42211434121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6858439 + ... + 6876121.

Almost surely, 2^121434112240 is an apocalyptic number.

121434112240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121434112240 is an abundant number, since it is smaller than the sum of its proper divisors (201278232848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121434112240 is a wasteful number, since it uses less digits than its factorization.

121434112240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29966 (or 29960 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121434112240 its reverse (42211434121), we get a palindrome (163645546361).

The spelling of 121434112240 in words is "one hundred twenty-one billion, four hundred thirty-four million, one hundred twelve thousand, two hundred forty".